Originally Posted by miami993
Originally Posted by OVERKILL
I've never understood the concept of buying a premium oil, at a premium price, and then having to "dose it" to get some perceived performance improvement
At that juncture, what are you paying the premium for then if the oil needs "boosting"?
Hi OVERKILL,
I just asked for a safety margin...~100hp/liter, 6.8 liter, 7500rpm, high speed run with sustained high speed high revs, is that common territory?
The engine is 6500 miles on this lub and stronger than ever...and by my usage it doesn't see a lot of cruising time!!!
Mr. Garmier was really confident the std formula will do more than good...I intent to have this engine driven the way it is still go for some years.
Results are what matters, and the ones delivered by this RLI are above anything else I used before.
On a side note, the oil price versus the amount of money this engine cost is not even to consider...sorry if it looks OVERKILL formula for you.
Christian
Sure, I understand that concern. Conversely, the Honda S2000 mill was >100HP/L, spun to north of 9K and required plain-jane 10w-30. The present 6.2L Hellcat mill produces 707HP (114HP/L), and has full warranty on an OTS 0w-40. The GT350 Mustang engine is 5.2L, produces 526HP and spins to 8,250RPM, it spec's a generic 5w-50 and of course also comes with full warranty. There are plenty of other examples with power densities north of 100HP/L where a Euro 0w-40 or similar is more than adequate. Porsche's A40 testing includes extensive simulated lapping of the Nurburgring followed by tear-down and measurements for example.
Just dumping more of something into a formulated lube does not in any way guarantee improvement. Without testing the results are simply unknown. That's the entire reason for the existence of the testing and approval regimens and why OEM spec's and approvals which involve actual operational testing followed by tear-down and analysis are leveraged. Well-funded race teams working with big blenders are doing this on the fly but those without those partnerships nor the ability to do frequent tear downs often depend on a previously developed and tested formula from their blender of choice. Mobil's racing oils, AMSOIL's Dominator line, Redline's racing oils...etc are products that fit well into that market.
Note that I'm not trying to downplay the challenges that the power density and usage profile of your application presents, simply pointing out that 100HP/L isn't a particularly exotic target at this juncture. The lubes used in OEM applications that are hitting at and above that power level aren't requiring "Wizards in a Can" as user Trav has described them in the past, to stay together. GM's own Race Program Corvette's have used either an OTS 0w-40 (M1 0w-40) or 15w-50 (M1 15w-50) and many of these oils are used, as is, at events like the 24hrs of LeMans, Sebring...etc.